PTS Wrap Up SBAs Flashcards
What is the diagnostic test for Addison’s disease?
SynACTHen test
Remember “…” for Addison’s
Lean, tanned, tired, tearful
Regular nebulised salbutamol is associated with…
hypokalaemia
Ramipril can cause…
hyperkalaemia
Cranial Diabetes Insipidus:
Hypothalamus doesn’t secrete enough ADH, but kidneys can still respond to ADH
Nephrogenic Diabetes Insipidus:
Kidneys are unable to respond to ADH, so can’t concentrate urine even when desmopressin is given
Acromegaly tests
- Serum IGF 1 1st line
- Oral glucose tolerance test is diagnostic
Symptoms of hyperaldosteronism
- Hypertension
- Excessive thirst
- Muscle cramps
- Fatigue
First line investigation for hyperaldosteronism?
Aldosterone Renin Ratio
Most likely cause of ACTH independent Cushing’s syndrome?
Iatrogenic - medication review and stop corticosteroids, eg. inhalers
What is a pheochromocytoma?
A tumour that secretes catecholamines derived from the chromaffin cells of the adrenal medulla
What is a phaeochromocytoma?
A tumour that secretes catecholamines derived from the chromaffin cells of the adrenal medulla
What is the pathophysiology of Graves’ hyperthyroidism?
TSH receptor autoantibodies activate TSH receptors - increased thyroxine and triiodothyronine
1st line treatment for diabetic ketoacidosis?
IV fluids then insulin therapy
What is the gold standard test for phaeochromocytoma?
Plasma free metanephrine (elevated)
What are some symptoms of Addison disease?
- Fatigue
- Weight loss
- Hyperpigmentation
- Salt craving
Signs/Symptoms of ketoacidosis?
- Excessive thirst
- Nausea and vomiting
- Fruity breath
- Weakness and fatigue
- Hypokalaemia due to excessive urination
Inferior leads:
II, III, aVF
Lateral leads:
I, aVL, V5, V6
Anterior/Septal leads:
V1-V4
What is the management for acute MI?
MONA - morphine, O2, nitrates, aspirin
O2 only indicated when SATS are below 94%
What drugs should be offered post-MI?
- Ace-i or ARB - Ramipril or Candesartan
- Beta blocker - Propanolol
- Statin - Atorvastatin
- Dual antiplatelet - Aspirin and Clopidogrel
ABCDE X ray findings in Heart Failure?
Alveolar oedema
Kerley B lines
Cardiomegaly
Dilation of UPPER lobe vessels
Effusions
ST elevation?
Prinzmetal angina
STEMI
Pericarditis
ST depression?
Unstable angina
NSTEMI
CHA2DS2VASc
Stroke risk for patients with AF
HAS-BLED
Risk of bleeding in patients on anticoagulation
QRISK3
Risk of a major CVA in next 10 years
Well’s Criteria
DVT risk
FRAX
Risk of fracture
What is the first line investigation, especially in primary care for heart failure?
BNP / NT-proBNP
Then ECG, Echo and CXR
ARD Fall
Aortic Regurgitation
Diastolic Decrescendo
ASS Bump
Aortic Stenosis
Systolic Crescendo / Decrescendo
MSD You
Mitral Stenosis
Diastolic Decrescendo / Presystolic Crescendo
MRS Through
Mitral Regurgitation
Pan systolic murmur
What is the best test for aortic stenosis diagnosis?
Trans thoracic doppler echocardiogram
Anaphylaxis Treatment?
- ABCDE
- Check diagnosis
- Call for help
- IM Adrenaline 500mg of 1:1000
- High flow O2
What is pericarditis?
Inflammation of the pericardium (the membrane that surrounds the heart)
What is Dressler syndrome?
Pericarditis occurring as a complication of MI, 2-3 weeks after the attack
What is endocarditis?
Inflammation of the heart valves
Which valve is usually affected in endocarditis?
Tricuspid as this is the first valve blood passes through after the systemic circulation
Signs/Symptoms of endocarditis?
- Fever
- Murmur
- Roth spots
- Janeway lesions
- Osler’s nodes
Causes of microcytic anaemia?
- Iron deficiency
- Thalassaemias
Causes of normocytic anaemia?
- Anaemia of chronic disease
- Renal disease
- Acute blood loss
Causes of macrocytic anaemia?
- B12 deficiency
- Folic acid deficiency
- Liver cirrhosis
- Bone marrow disorders
What is the MCV for microcytic anaemia?
<80 fL
What is the MCV for normocytic anaemia?
80-100 fL
What is the MCV for macrocytic anaemia?
> 100 fL
How is B12 absorbed?
B12 binds to intrinsic factor which is produced by the parietal cells of the stomach, it is then absorbed in the terminal ileum.
Pathophysiology of pernicious anaemia?
Parietal cells of stomach are attacked by immune system. This results in atrophic gastritis and the loss of intrinsic factor production
What is hereditary spherocytosis?
Defects in red cell membrane that cause the surface area to volume ratio to decrease and the cell to become more rigid and less deformable than normal RBCs
Symptoms of hereditary spherocytosis?
- Anaemia
- Jaundice
- Splenomegaly
What would the blood film look like in a patient with beta thalassaemia?
Large and small irregular hypochromic erythrocytes
What are the features of multiple myeloma?
Old CRAB
- Typically presents over 70 yrs of age
- Hyper calcaemia
- Renal impairment
- Anaemia
- Bone lesions - Back pain, pepper pot skull
What would show on a bone marrow biopsy to confirm a diagnosis of acute myeloid leukaemia?
Auer rods
What may show on a blood film of patients with multiple myeloma?
Rouleaux formation
What plasmodium causes the most severe form of malaria?
P. Falciparum
Symptoms of TB?
- Persistent cough
- Weight loss
- Night sweats
- Fever
What is a typical symptom of malaria?
Fever that causes sweats and chills
Stage 1 Lymphoma
Cancer is contained to a single lymph node group
Stage 2 Lymphoma
Cancer is on a single side of the diaphragm
Stage 3 Lymphoma
Cancer is on both sides of the diaphragm
Stage 4 Lymphoma
Cancer has spread beyond the lymph nodes
A or B at the end of the Ann Arbor staging system?
B if the patient has “B type” symptoms - fever, night sweats, weight loss
Which leukaemia is commonest in children?
Acute lymphoblastic leukaemia
What is the treatment for chronic myeloid leukaemia?
Chemotherapy and tyrosine kinase inhibitor (imatinib)
What is haemophilia A?
Clotting factor 8 deficiency
What is haemophilia B?
Clotting factor 9 deficiency
What are the two types of secondary polycythaemia?
Compensatory and abnormal
Example of compensatory polycythaemia?
High altitude - in hypoxic conditions, kidneys produce more erythropoetin
Example of abnormal polycythaemia vera?
Tumour secreting erythropoetin
What is the first line investigation for acute pancreatitis?
Serum amylase
What is the first line treatment for autoimmune hepatits?
Prednisolone (Steroids)
What tests would you order for a diagnosis of autoimmune hepatits?
Investigative bloods - FBC and:
1. IgG
2. Anti smooth muscle antibodies - high level is indicative of autoimmune hepatits
What is primary sclerosing cholangitis?
Fibrosis destroying the intrahepatic and extrahepatic bile ducts
What is primary biliary cholangitis?
Inherited abnormality of immunoregulation leads to a T lymphocyte mediated attack on intrahepatic bile ducts
What is a diagnostic feature of primary biliary cholangitis?
Anti-mitochondrial antibodies (AMA)
What is a diagnostic feature of primary sclerosing cholangitis?
Beaded appearance of bile ducts on MRI / Endoscopic retrograde cholangiopancreatography
What diseases is primary biliary cholangitis associated with?
Other autoimmune disorders, eg. RA, Sjogrens
What disease is primary sclerosing cholangitis associated with?
- Ulcerative colitis
- Cholangiocarcinoma
What are some symptoms of primary biliary cholangitis?
- Jaundice
- Pruritus (Itching)
- Fatigue
- Irritable bowel
What colour urine / stools would you see in someone with pre-hepatic jaundice?
Normal urine, dark stools
What colour urine / stools would you see in someone with intra-hepatic jaundice?
Dark urine, normal -/ slightly lighter coloured stools
What colour urine / stools would you see in someone with post-hepatic jaundice?
Dark urine, pale stools
What is the first line treatment for alcohol withdrawal?
Chlordiazepoxide
What is the most common cause of liver cirrhosis?
Alcohol abuse
What is Charcot’s triad of ascending cholangitis?
Jaundice, fever, RUQ pain
What is the difference between the presentation of acute cholecystitis and ascending cholangitis?
Patients with acute cholecystitis will NOT HAVE JAUNDICE
What is Gilbert’s syndrome?
A disorder causing impaired conjugation of bilirubin due to decreased levels of the UDPGT enzyme